General hearing aid battery maintenance tips:

Do not place your hearing aid batteries in the refrigerator. Zinc-air battery cells do not respond well to extreme temperatures. Keep batteries in room temperature.

Do not remove the sticker on the batteries until you are ready to use them. Once you remove the sticker, the zinc air batteries are activated and have started to drain.

Watch the expiration date. Hearing aid batteries lose capacity over time, even while sitting on a shelf in their package. We recommend not purchasing any hearing aid batteries within 12 months of their expiration date (printed on the package).

Do not hold the batteries too long. Because the batteries lose capacity over time (even while in package), it is best to not purchase more than a 6 month supply at one time.